Boiler



G. A. CLOSE BOILER June 3, 1947.

Filed Aug. 6, 1945 INVENTOR.

Patented June 3, 1947 UNITED STATES PATENT OFFICE George A. Close, BayCity, Mich.

Application August 6, 1945, Serial No. 609,063

1 Claim.

This invention relates to boilers of the type used in homes,manufacturing plants, and buildings in general where a heating unit isrequired.

One of the prime objects of the invention is to design a boiler formedof plate sections, welded together so that all parts can be readilyassembled and are readily accessible for removal or repair.

Another object is to design a boiler which will be highly efficient inoperation, economical to manufacture and assemble, and which is verycompact, requiring a minimum floor space for installation.

A still further object is to provide a boiler in which the flame fromthe burner is disposed directly below the centrally disposed conicalshaped water vessel, thus utilizing the full heating potency of theburner,

A still further object is to design a boiler in which the hot gasesfollow a tortuous path through the boiler so that all heat units arefully utilized.

To the accomplishment of the foregoing and related ends, said inventionthen consists in the means hereinafter fully described, and particularlypointed out in the claim and annexed drawing, the following descriptionsetting forth in detail certain means and one mode of carrying out theinvention, such disclosed means and mode illustrating, however, but oneof various ways in which the principle of the invention may be used.

In the drawing:

Fig. 1 is a side-elevational view of my improved boiler.

Fig. 2 is a vertical, sectional-elevational view taken on the line 2-2of Fig. 1.

Fig. 3 is a sectional plan view taken on the line 3--3 of Fig. 1.

Fig. 4 is also a sectional, side-elevational View taken on the line 4-4of Fig. 3.

In the accompanying drawing in which is shown the preferred embodimentof my invention, the numeral 8 indicates the foundation on which thespaced-apart walls 9 and II] of a sheet metal boiler are mounted asusual, the spacing of the walls forming a water chamber II therebetween,and into which water is introduced by means of a water supply pipe I2which can be connected to any convenient source of supply.

A centrally disposed, conical shaped vessel V forms a part of theboiler, and is formed as clearly shown in Figs. 1, 2, and 4, the lowerend being conical shaped as at I 3, thence tapering upwardly into acylindrical section I4 and opening into the steam chamber of the boiler,as will be hereinafter described. The lower end of the vessel V isclosed by the conical bottom I3.

Pipe lines I5 connect the lower portion of the vessel V with the waterchamber II so that full circulation is provided, and a horizontallydisposed crown sheet I6 connects the walls I0.

Spaced apart tube sheets I! and IB are provided above the crown sheet I6and a centrally disposed passage I9 is provided in the crown sheet IE toaccommodate the neck I4 of the water vessel, which opens to the steamchamber S in the top of the boiler. The passage I9 is of larger diameterthan the neck I4 and the hot gases flow upwardl around the neck I4 andinto the passage .20 formed by the tube sheets I1 and +8 and sheets 23.

A plurality of vertically disposed, relatively large tubes 2| areprovided in the passage 20 between the tube sheets and through which thewater circulates into the top of the boiler, said boiler being providedwith a, dome 22 as usual, to which a steam line (not shown) can beconnected in the conventional manner.

Vertically disposed sheets 23 and 24 are provided between the tubesheets I! and I8 and form relatively narrow water passages 25, thesheets 24, together with the side wall 9, forming passages 20' betweenthe tube sheets I1 and It in which a plurality of vertically disposedtubes 26 is provided, the center passage 20 leading rearwardly andopening into the passages 21 at the front end of the boiler. Thepassages 21 communicate with the passage 20' which are connectedtogether as shown to provide a breeching 28 that leads to a stack (notshown).

The gas burner B is located in the combustion chamber 2-9 and issupported on legs 30 as usual, a pipe line 3| leading to any suitablesource of supply.

In practice, the flame from the burner B is disposed directly beneaththe water vessel V, and the hot gases circulate in the combustionchamber 29 as indicated by the arrows; thence flowing upwardly throughthe passage I9, thence into the smoke passages 20 around the tubes 26,and thence to the breeching and smoke stack.

A clean-out door 32 is provided in the outer shell and is secured inposition by means of bolts 33 as usual. The safety valve and water glassare omitted as they form no part of the present invention.

From the foregoing description, it will be obvious that I have perfecteda very simple and efficient all-welded boiler which is easy to assembleand fabricate, and which can be readily cleaned and/or repaired asoccasion demands.

What I claim is:

A heating boiler of the class described comprising, inner and outershells forming a water chamber therebetween, with the inner shell curvedinwardly to form a crown sheet, vertically spaced tube sheets above thecrown sheet, vertical water tubes between the tube sheets, par- 7 4titions between the said tube sheets to form horizontally disposed smokepassages therebetween, a centrally disposed smoke flue projecting fromsaid crown sheet and opening into the central passage, a centrallydisposed, substantially pearshaped water vessel suspended from the uppertube sheet and passing through the said smoke flue, and vertical tubesbetween said tube sheets.

GEORGE A. CLOSE.

